Reeflink has a history of poor performance. I came across the same complaints online.
I believe it gets “knocked off” the WiFi due to sensitivity to environmental or electrical changes e.g. rain, snow, and power surges. You only run into problems when you wanna make changes to the settings. Other then that, although the circle is “green” my last setting program is saved.
*You have to relink with WiFi, remember to scroll down the screen to find your WiFi name. It may take a few minutes to appear, and it may not be visible.